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Green circuit board with PCIe edge connector and dual SFF-8654 ports

Innocard

Innocard PCIe Gen4 gender changer SFF-8654 8i x2 bifurcation ReDriver

SKU CH-DYS4-Z46HW

Converts a PCIe 4.0 x16 slot to two SFF-8654 8i ports with a ReDriver for longer cable runs

  • Changer TypePCIe Gen4
  • Built-in ReDriver extends PCIe 4.0 16 GT/s signals
  • 16 lanes bifurcate into four x4 links for flexible topologies
  • Integrated clock buffer supports 100 MHz operation over longer cables
  • Compliant with SFF-8654 1.2 and SFF-9402 1.1 specifications
  • Multiple bus buffers maintain signal integrity across extended trace lengths

PCIe Gen4 to SFF-8654 adapter

This Innocard adapter converts a PCI Express 4.0 x16 slot into two SFF-8654 8i connectors. It targets rack-server builders who need to attach high-density storage or accelerator cables directly to the motherboard. The on-board ReDriver extends signal reach across longer traces and cables. Bifurcation support splits the sixteen lanes into four x4 links for flexible topologies.

Replaces basic passive risers

A simple gender changer without re-driving capability limits cable length and trace distance at 16 GT/s. This card adds a ReDriver, clock buffer and multiple side-band buffers so the link remains stable over extended runs. The jump is worth it when the chassis layout forces longer cables or when the backplane requires PERST#, WAKE#, CLKREQ# and PWRBRK# buffering across distance.

Sustained signal integrity under load

The integrated ReDriver and 100 MHz clock buffer maintain eye opening during continuous 16 GT/s traffic rather than only during short bursts. Side-band buffers keep reset, wake and clock-request signals clean over the same extended paths. A green D1 LED confirms the add-in card is powered and ready before the operating system loads.

Highlights

  • Built-in ReDriver extends PCIe 4.0 16 GT/s signals
  • 16 lanes bifurcate into four x4 links for flexible topologies
  • Integrated clock buffer supports 100 MHz operation over longer cables
  • Compliant with SFF-8654 1.2 and SFF-9402 1.1 specifications
  • Multiple bus buffers maintain signal integrity across extended trace lengths

Specifications

Changer TypePCIe Gen4

Questions about this item

Does this gender changer require a PCIe x16 slot and two SFF-8654 8i cables to operate?

Yes, it plugs into a PCIe x16 slot and provides two SFF-8654 8i connectors for SlimSAS cables, supporting bifurcation into four x4 links.

How is the ReDriver powered and what indicates the adapter is ready?

Power is drawn from the PCIe slot; the green D1 LED lights when the add-in card is ready and the PERST# buffer is active.

Will the onboard clock buffer and SMBus switch need firmware updates or replacement over time?

No firmware updates are required; the 100 MHz clock buffer, SMBus switch and signal buffers are passive hardware components with no user-serviceable parts.

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